JUKI DDL-8700 Industrial Straight Stitch Sewing Machine User Manual

1. Introduction

This manual provides essential information for the safe and efficient operation, setup, and maintenance of your JUKI DDL-8700 Industrial Straight Stitch Sewing Machine. Please read this manual thoroughly before using the machine to ensure proper function and longevity. This machine is designed for sewing light to medium-weight fabrics and is not intended for heavy materials like leather.

2. Consignes de sécurité

• Always disconnect the power supply before cleaning, servicing, or making adjustments to the machine.
• Gardez vos doigts éloignés de la zone de l'aiguille et des pièces mobiles pendant l'opération.
• N’utilisez pas la machine si les cordons ou les prises sont endommagés.
• Assurez-vous que la machine est placée sur une surface stable et plane.
• Gardez les enfants et les animaux domestiques éloignés de la machine pendant son fonctionnement.
• Use only recommended needles and accessories for this machine.

3. Contenu du colis

Vérifiez que tous les composants énumérés ci-dessous sont présents dans votre colis :

• JUKI DDL-8700 Machine Head
• Sewing Machine Table and Stand (partially assembled)
• Electronic DC Servo Motor (3/4 H.P, 1 PHASE, 110 VOLT)
• Task Chair (Low-Back with 360-Degree Swivel Casters)
• Winder Bobbin
• Support de fil
• Huile de machine
• Releveur de genoux
• Courroie trapézoïdale
• 5 Extra Bobbins
• 10 Extra Needles
• Manuel d'instructions (ce document)
• Tournevis
• Carter d'huile
• DEL Lamp (may require separate attachment)

Figure 3.1: Assorted accessories and parts for the JUKI DDL-8700.

4. Installation

4.1 Machine and Stand Assembly

The machine stand is shipped pre-assembled. The machine head is packaged separately. Carefully place the machine head onto the designated area of the table. Secure it according to the instructions provided in the separate assembly guide for the table and head. Attach the LED lamp and thread rack as needed.

Figure 4.1: Fully assembled JUKI DDL-8700 setup.

4.2. Lubrification de la machine

Locate the oil pan beneath the machine head. Fill the oil pan with the included machine oil. Ensure the oil level is within the recommended range. Regular oiling is crucial for the machine's performance and longevity.

4.3 Connexion du moteur

The electronic DC Servo Motor is typically pre-installed with the stand. Verify all connections are secure. The motor features a speed regulator for precise control over sewing speed.

Figure 4.2: Electronic DC Servo Motor with speed regulator.

4.4 Assemblage de la chaise

The task chair requires minimal assembly. Follow the instructions provided with the chair to attach the backrest, seat, and casters to the base. The chair's height is adjustable from 34.6 to 37.8 inches.

Figure 4.3: Included ergonomic task chair.

5. Mode d'emploi

5.1 Mise sous/hors tension

Locate the power switch, usually on the table's underside or near the motor. Flip the switch to the 'ON' position to power the machine. The motor operates silently when idle.

5.2 Enfilage de la machine

Follow the threading path indicated on the machine head. Ensure the thread passes through all guides and tension discs correctly. Incorrect threading can lead to skipped stitches or thread breakage.

Figure 5.1: JUKI DDL-8700 machine head.

5.3 Réglage de la tension du fil

The thread tension can be adjusted using the tension dial on the machine head. Adjust as necessary to achieve balanced stitches on both the top and bottom of your fabric.

5.4 Réglage de la longueur des points

The stitch length can be adjusted up to a maximum of 5 mm. Use the stitch length dial or lever on the machine head to select your desired stitch length. For easier adjustment, press the lever while turning the dial.

5.5 Presser Foot Lift and Knee Lifter

The presser foot can be lifted manually or using the knee lifter mechanism. The maximum foot lift is 5.5 mm by hand and 13 mm using the knee lifter. The knee lifter allows for hands-free lifting of the presser foot, which is convenient for handling fabric.

Figure 5.2: Foot pedal and knee lifter mechanism.

5.6 Couture inversée

To engage reverse stitching, press the reverse lever located on the machine head. This is used for securing stitches at the beginning and end of a seam.

Contrôle de vitesse 5.7

The electronic DC Servo Motor allows for variable speed control. Adjust the speed regulator dial on the motor to set the maximum sewing speed. This is particularly useful for beginners who may prefer a slower speed, or for intricate work requiring precise control.

6. Entretien

6.1 Nettoyage

Regularly clean lint and dust from the bobbin area, feed dogs, and tension discs using a brush or vacuum. Ensure the machine is unplugged before cleaning.

6.2 Lubrification

Check the oil level in the oil pan regularly and refill as needed. Refer to the machine head's specific lubrication points for additional oiling requirements, typically indicated by red dots or specific instructions in the detailed manual.

6.3 Remplacement de l'aiguille

Replace needles frequently, especially when sewing different fabric types or if the needle becomes dull or bent. Use needles of type DBX1 (16x231) in sizes 9-18, up to size 19.

7. Dépannage

• Points sautés : Check needle installation, ensure it's inserted correctly and not bent. Verify proper threading and tension.
• Rupture du fil : Inspect for burrs on the needle plate or tension discs. Re-thread the machine, ensuring the thread is not snagged. Adjust tension if too tight.
• Points irréguliers : Adjust thread tension for both upper and bobbin threads. Ensure the correct needle size for the fabric.
• La machine ne démarre pas : Check power connection, ensure the power switch is on, and the foot pedal is properly connected.

Pour un dépannage plus détaillé, reportez-vous au manuel complet ou contactez le service client.

8. Spécifications

9. Garantie et assistance

For warranty information and customer support, please refer to the documentation provided by your retailer or contact JUKI customer service directly. Keep your purchase receipt and model number handy for any inquiries.